TheExtensionLab_MultiselectFilters

Sometimes you need to filter by more that one dropdown value, and without customisation that isn't possible in Magento.

This extension replaces the default single select dropdowns with multi-select dropdowns in Magento admin grids.. With this extension you can now search admin grids by Simple and Configurable Products, Refunded and Cancelled order status. Take a look a the quick preview below.